mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-23 23:00:19 +00:00
52 lines
2.0 KiB
Go
52 lines
2.0 KiB
Go
/*
|
|
*
|
|
* Copyright 2016 gRPC authors.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
*/
|
|
|
|
// Package tap defines the function handles which are executed on the transport
|
|
// layer of gRPC-Go and related information. Everything here is EXPERIMENTAL.
|
|
package tap
|
|
|
|
import (
|
|
"context"
|
|
)
|
|
|
|
// Info defines the relevant information needed by the handles.
|
|
type Info struct {
|
|
// FullMethodName is the string of grpc method (in the format of
|
|
// /package.service/method).
|
|
FullMethodName string
|
|
// TODO: More to be added.
|
|
}
|
|
|
|
// ServerInHandle defines the function which runs before a new stream is created
|
|
// on the server side. If it returns a non-nil error, the stream will not be
|
|
// created and a RST_STREAM will be sent back to the client with REFUSED_STREAM.
|
|
// The client will receive an RPC error "code = Unavailable, desc = stream
|
|
// terminated by RST_STREAM with error code: REFUSED_STREAM".
|
|
//
|
|
// It's intended to be used in situations where you don't want to waste the
|
|
// resources to accept the new stream (e.g. rate-limiting). And the content of
|
|
// the error will be ignored and won't be sent back to the client. For other
|
|
// general usages, please use interceptors.
|
|
//
|
|
// Note that it is executed in the per-connection I/O goroutine(s) instead of
|
|
// per-RPC goroutine. Therefore, users should NOT have any
|
|
// blocking/time-consuming work in this handle. Otherwise all the RPCs would
|
|
// slow down. Also, for the same reason, this handle won't be called
|
|
// concurrently by gRPC.
|
|
type ServerInHandle func(ctx context.Context, info *Info) (context.Context, error)
|